Grinding in 4 wheel drive

[jeepmedic46]

My 05 f150 makes a grinding noise when turning in 4 wheel drive. Doesn't make any noise in 2 wheel drive. I had both actuators done not to long ago.

 

[Anthony24x]

Front axles or front wheel bearings? What type of grinding? On or off power? How hard are you turning?
At what speed?

 

[jeepmedic46]

Coming from the front end while turning either right or left, slow maybe about 5mph. Wheel bearings were replaced about a year ago.

 

[phydough]

CV joint(s) maybe.

 

[Kaisen]

I'd bet it's the 4x4 hubs, what Ford calls IWE (Integrated Wheel Ends). No the actuators, the hubs themselves (one or both)

http://www.ford-trucks.com/forums/8...-know-about-the-iwe-system-and-then-some.html

 

[jeepmedic46]

That is quite a write up thank you? Hoping its not a expensive fix. Everything seems to be going at the same time. My power windows just died as well.

 

[Kaisen]

They're only $91 each

http://tousleyfordparts.com/parts/2...CARRIER & FRONT AXLES&component=Actuator assy

 

[jeepmedic46]

I need to replace my actuators again?

 

[Kaisen]

It's a system, so the "noise" itself is coming from the actuators (like automatic hubs). They half-engage and grind the teeth. But that just might be the symptom. The solenoid might be bad (Ford has had three part number updates trying to solve the problem), or the vacuum lines might be clogged with dirt, or in some other way not holding vacuum somewhere in the system. Check for vacuum, check for leaks, check for water and/or clogs.

Do a quick Google search and you'll find others that have tackled the exact same symptoms

 

[POS]

4WD needs the same diameter tires or you'll get binding (grinding feel). Were all the tires bought at the same time? Is the wear the same?

 

[jeepmedic46]

All the tires were bought at the same time. This is a tight month so I'll have to save to see what is wrong with the truck

 

[FordGuy1]

Here at the Ford Dealership we do a lot of vacuum repairs for that complaint.

 

[DaveNay]

All the tires were bought at the same time. This is a tight month so I'll have to save to see what is wrong with the truck

I'm sure the Ford dealer would flip over this, but when my IWE's went bad and I was short of cash, I took them out, then cut out the gear and retainer spring and vacuum seal (which was shot already) then I put the empty housings back on the truck. Drove like that for over a year before I was able to replace them. I didn't have 4WD, but I also didn't have the horrible grinding sound.